bowlng_kata.rb

require 'rspec'

def get_score(game)
  
  bonus_tally = []
  counter = 0
  while counter < game.length
    if game[counter] == 10
      scores_to_add = [game[counter + 1], game[counter + 2]]
      bonus_tally += scores_to_add unless scores_to_add.any?(&:nil?)
      counter += 1
    elsif game[counter] + game[counter + 1] == 10
      bonus_tally << game[counter + 2]
      counter += 2
    else
      counter += 2
    end
  end

  game += bonus_tally
  game.reject(&:nil?).reduce(:+)
end

#   game.each_index do |index|
#     if index % 2 == 0
#       frame = game[index] + game[index + 1] unless game[index + 1].nil?
#       added_tallies << game[index + 2] if frame == 10
#       added_tallies << game[index + 3] if game[index] == 10
#     end
#   end


#   puts tally
#   puts added_tallies
#   tally += added_tallies.reject(&:nil?).reduce(:+) unless added_tallies.empty?
#   tally
# end

describe "Bowling game" do
  context "with all gutters" do
    it "scores zero" do
      game = [0] * 20
      get_score(game).should == 0
    end
  end

  context "with one pin knocked down on every roll" do
    it "scores twenty" do
      game = [1] * 20
      get_score(game).should == 20
    end
  end

  context "with a spare in the first frame followed by three pins followed by all misses" do
    it "scores sixteen" do
      game = [8, 2, 3] + [0] * 17
      get_score(game).should == 16
    end
  end

  context "with a strike in the first frame followed by three pins followed by four pins followed by all misses" do
    it "scores 24" do
      game = [10, 3, 4] + [0] * 16
      get_score(game).should == 24
    end
  end

  context "a perfect game (12 strikes)" do
    it "scores 300" do
      game = [10] * 12
      get_score(game).should == 300
    end
  end

end